Does not the owner of a Qld caravan need to have a current roadworthy certificate before he can advertise a van for sale? That would allow the new owner to transfer the registration into his name, take it to wherever and do what is needed for the permanent registration.

In Qld, you must have a current roadworthy certificate and gas certificate to sell the van.

I have advertised a van without a roadworthy or gas cert, I then got them when a person indicated he would buy the van. Illegal maybe. but no one checks and in the end the certificates were produced for rego transfer.

If you take your interstate registered vehicle into SA and it is registered in your name you do not have to take it to be inspected. Just head to Transport SA with your rego certificate, I.D and a whole heap of money.